>It's nice to see that everyone instantly suspects me of wishing to tamper
>with the signals. I'm just interested in if and how (THEORETICALLY) it
>could be done. I thought that there must be something more to
>it...otherwise I would have thought some hooligans would have tried such a
>thing already.
Too late, they frequently do.
Years ago, I was on a tour that stopped at Temora, the SM/Signalman put on
quite a show in the signal box, explaining things and throwing leavers
with much 'show'.
Some then pointed out that one of the crossing bells, down the far end of
the yard had not stopped, he cursed stormed out, and about 10 minutes later
came back and reported that some one had put a piece of roofing iron across
the track, triping the warning bells. It appears that a group of local youths
had discovered how the signals work, it appeared they were dropping a
piece of metal of some sort each time they passed through the area.
-- Matthew Geier, | Australian Public Access Network Association matthew@sleeper.apana.org.au | +61 2 9587 9773 matthew@law.usyd.edu.au | 018 977 356